I just noticed a few minutes ago on Post 21 of the T180 cooling upgrade thread that propperchopper said he used 10/32 for the 90 degree fittings, how close is that to 5mm?
Yes the tpi (teeth per inch) is more or less the same on the two, the 10/32 is around .007" smaller in diameter. You just need to take care when tightening that you don't over tighten.
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